In addition, compared to traditional VSVPWM, fewer zero-voltage switchings are used.This thus reduces switching loss of power transistors and increasing the efficiency of system operation.

• 本文之系统亦选用适当的零电压向量，以减少三相变频器功率级开关元件之切换频率，降低开关元件切换损失，以提高运转效率。